The TDS Water Quality Testing Pen is a portable digital meter designed to measure total dissolved solids in water to help assess water purity. It supports a wide TDS measuring range from 0 to 4999 ppm, making it suitable for testing drinking water, tap water, aquarium water, pools, agricultural water, and other household or environmental water sources. Lower TDS readings generally indicate fewer dissolved substances present in the water.

The pen-style tester features a one-button operation for quick and simple measurements. It is equipped with an automatic temperature compensation function to help maintain measurement accuracy across different water temperatures. The device also measures water temperature within a supported range, allowing users to view real-time readings during testing.

Constructed with an ABS housing, the tester is lightweight and easy to carry for on-the-go use. The high-sensitivity probe is designed to detect dissolved salts, ionic compounds, and other soluble substances commonly found in water. Battery-powered operation allows convenient use without external power sources.

Specifications
Material: ABS
Colour Name: White
Measuring Range: 0–4999 ppm
Resolution: 1 ppm
Temperature Range: 0–60 °C
Product Height: 15 cm
Product Length: 1.45 cm
Product Width: 1.6 cm
Product Weight: 28 g
Battery Type: LR44
Features: Batteries Included
Model Name: TDS Water Quality Testing Pen
Model Number: TDS Water Quality Tester
What’s In The Box: TDS Meter Water Tester x1